Crush candy canes in zip top bag. Set aside.
Line a 9-inch pan with parchment paper. Set aside.
Pour dark chocolate into prepared pan.
Allow to cool until just set, but not hardened.
Add peppermint oil to white chocolate.
Pour over dark chocolate, tilting the pan to cover evenly.
Allow to cool until just starting to set.
Sprinkle with peppermint candy.
Allow to harden completely.
Lift peppermint bark from pan and, using a sharp knife, cut into triangles.